Angular momentum exchange during secular migration of two-planet systems
Abstract
We investigate the secular dynamics of two-planet coplanar systems evolving under mutual gravitational interactions and dissipative forces. We consider two mechanisms responsible for the planetary migration: star-planet (or planet-satellite) tidal interactions and interactions of a planet with a gaseous disc. We show that each migration mechanism is characterized by a specific law of orbital angular momentum exchange. Calculating stationary solutions of the conservative secular problem and taking into account the orbital angular momentum leakage, we trace the evolutionary routes followed by the planet pairs during the migration process. This procedure allows us to recover the dynamical history of two-planet systems and constrain parameters of the involved physical processes.
Cite
@article{arxiv.1106.0014,
title = {Angular momentum exchange during secular migration of two-planet systems},
author = {Adrián Rodríguez and Tatiana A. Michtchenko and Octavio Miloni},
journal= {arXiv preprint arXiv:1106.0014},
year = {2012}
}
Comments
20 pages, 9 figures, accepted for publication in Celestial Mechanics and Dynamical Astronomy (special issue on Exoplanets)